"libgtk-1.2"... the Loki installer is old and may not gracefully find libgtk2. You could try two things depending on your comfort level with linux.

1) just install the old libgtk1.2 file from a repository. This shouldn't cause any probs with gtk2 already installed, but I can't promise it won't cause some probs somewhere.

2) just create a symlink from a dummy libgtk-1.2 (with the correct .so filename which you can get from the error message) and point the symlink to the newer gtk2 .so file. This may or may not work depending on how much backwards compatibility there is between 1.2 and 2.x. You should be able to delete the symlink after installation. Note: this will require root priviledges.

3) search the forums about the "loki" installer -- I seem to remember there is a command line switch that bypasses the gui and just extracts everything directly. Search the web too, since loki is used by others.

Note: you will want to immediately install the 1.4.0b9 patch from the sticky thread in this forum. It is a shar script, so has no gui and no need for gtk.

... Darwinia doesn't need gtk at all -- it's not linked in the executable. Only the old loki installer for the original darwinia needs gtk for the installer gui. After you install the base game, gtk is never needed again, not even to install the patches, which are all command line shars.